Nature strives to achieve perfection. The theory of natural selection elucidates this. Every being that lives with its own unique set of Genes is because those Genes help the organism survive in its environment. Those which are not suited to live in that habitat either migrate or disappear from the tree of life. A bird has feathers that help maintain body temperature even at the colder levels of the atmosphere. Herbivores like deer have a four-chamber digestive system that helps them digest the cellulose in the plant better. Microbes like Bacteria have their genome that helps it survive in its chosen environment. Plants that bear fruits make sure that the fruit is delicious so the seeds are scattered by the animals that eat it. To put simply, evolution is nature’s art, each being is the perfect organism to live in its chosen environment, with each generation slowly changing to adapt to the changing world. Now, we come to Humans. We too are a product of evolution. Our greatest a...